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S20 Vibroacústica |
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Title:
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VIBRO-ACOUSTIC MODELING IN INFINITE FLUID MEDIUM USING THE FINITE ELEMENT METHOD AND DTN MAPPING
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Summary :
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THE DIRICHLET-TO-NEUMANN (DTN) FINITE ELEMENT METHOD IS A COMBINED NUMERICAL-ANALYTIC METHOD FOR BOUNDARY VALUE PROBLEMS IN INFINITE DOMAINS. THIS PAPER PRESENTS A TWO-DIMENSIONAL DTN FORMULATION TO SOLVE RADIATION PROBLEMS IN TIME-HARMONIC VIBRO-ACOUSTICS SYSTEMS. THE COMPUTATIONAL ASPECT RELATED TO THE DTN FINITE ELEMENT CODE IMPLEMENTATIONS ARE DISCUSSED. IN THIS WORK, THE DTN MAPPING IS APPLIED TO SOLVE A COUPLED FLUID-STRUCTURE PROBLEM. THE METHOD IS USED TO ANALYSE THE ACOUSTIC RADIATION OF THE FREE-FREE PLATE IN INFINITE AIR MEDIUM. THE NUMERICAL SIMULATIONS ARE IN GOOD AGREEMENT WITH THE
EXPERIMENTAL RESULTS. |
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Author :
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Pavanello, Renato 0
Zavala, Paulo Alexandre Galarce
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Paper View :
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